| Centuries: | 5th century · 6th century · 7th century |
| Decades: | 510s 520s 530s 540s 550s 560s 570s |
| Years: | 540 541 542 543 544 545 546 |
| 543 by topic | |
| Politics | |
| State leaders – Sovereign states | |
| Birth and death categories | |
| Births – Deaths | |
| Establishment and disestablishment categories | |
| Establishments – Disestablishments | |
| Gregorian calendar | 543 DXLIII |
| Ab urbe condita | 1296 |
| Armenian calendar | N/A |
| Bahá'í calendar | -1301 – -1300 |
| Bengali calendar | -50 |
| Berber calendar | 1493 |
| Buddhist calendar | 1087 |
| Burmese calendar | -95 |
| Byzantine calendar | 6051 – 6052 |
| Chinese calendar | 壬戌年十二月初十日 (3179/3239-12-10) — to —
癸亥年十一月二十日(3180/3240-11-20) |
| Coptic calendar | 259 – 260 |
| Ethiopian calendar | 535 – 536 |
| Hebrew calendar | 4303 – 4304 |
| Hindu calendars | |
| - Bikram Samwat | 599 – 600 |
| - Shaka Samvat | 465 – 466 |
| - Kali Yuga | 3644 – 3645 |
| Holocene calendar | 10543 |
| Iranian calendar | 79 BP – 78 BP |
| Islamic calendar | 81 BH – 80 BH |
| Japanese calendar | |
| Korean calendar | 2876 |
| Thai solar calendar | 1086 |